Update README.md (#97)

The spacing in the example would identify the parse-json-secrets as an invalid secret key.

README.md

@@ -141,7 +141,7 @@ The following example creates environment variables by parsing the JSON in the s
     secret-ids: |
       test/secret
       ,secret2
-      parse-json-secrets: true
+    parse-json-secrets: true
 ```
 The secret `test/secret` has the following secret value.  
 
@@ -178,4 +178,4 @@ See [CONTRIBUTING](CONTRIBUTING.md#security-issue-notifications) for more inform
 
 ## License
 
-This library is licensed under the MIT-0 License. See the LICENSE file.
+This library is licensed under the MIT-0 License. See the LICENSE file.